Journal article

Publication year: 1991

Pages: 3522-3534

Journal: Physical review A

Volume number: 43

Issue number: 7

ISSN: 1050-2947

eISSN: 1094-1622

DOI Link: https://doi.org/10.1103/PhysRevA.43.3522

Publisher: American Physical Society

Abstract: 
Experimental cross sections for single and double ionization of Ba2+ and Ba3+ ions are presented for an electron-impact energy range from threshold up to 1000 eV. By the alternative use of a "hot" electron-cyclotron-resonance ion source and a "cold" Penning ion source, beams of ions with and without metastable content could be employed. A fast energy-scanning technique with step widths of about 40 meV and an energy resolution of 0.4 eV revealed fine details in the cross sections, and in particular resonant contributions to single and double ionization could be observed. The data are interpreted on the basis of calculations of energy levels and distorted-wave calculations of direct ionization from various electron subshells. Influences of giant-resonance phenomena are discussed.

Harvard Citation style: TINSCHERT, K., MULLER, A., HOFMANN, G., SALZBORN, E. and YOUNGER, S. (1991) ELECTRON-IMPACT SINGLE AND DOUBLE IONIZATION OF BA2+ AND BA3+ IONS, PHYSICAL REVIEW A, 43(7), pp. 3522-3534. https://doi.org/10.1103/PhysRevA.43.3522

APA Citation style: TINSCHERT, K., MULLER, A., HOFMANN, G., SALZBORN, E., & YOUNGER, S. (1991). ELECTRON-IMPACT SINGLE AND DOUBLE IONIZATION OF BA2+ AND BA3+ IONS. PHYSICAL REVIEW A. 43(7), 3522-3534. https://doi.org/10.1103/PhysRevA.43.3522